Kuraray Noritake Dental Inc. (President: Kiyoyuki Arikawa), with its head office in Chiyoda-ku, Tokyo, Japan, is convinced that a German manufacturer of components for medical ceramics is infringing Kuraray Noritake Dental Inc.’s European Patent No. 2024300. This patent protects a method for manufacturing layered ceramics. On August 5th, 2019, Kuraray Noritake Dental Inc. filed a patent infringement lawsuit against this company and its two general managers with the Düsseldorf District Court. Kuraray Noritake Dental Inc. requested the court to enjoin the company from selling its multi-layered zirconia discs and to award damages for past infringing activities.
In 2012, Kuraray Noritake Dental Inc. launched a multi-layered zirconia disc with smooth gradations between the layers, called “KATANA™ Zirconia”. The multi-layered structure has been achieved by taking advantage of a proprietary coloring technology and optimizing the amounts of pigments contained in the product. This product also delivers fine accuracy of adaptation, which has been achieved by precisely controlling the shrinkage factor of each layer. It is possible to use a KATANA™ Zirconia disc to fabricate a full-zirconia restoration with gradations realistically simulating tooth shades from the cervical (gum) area to the incisal edges in a simple milling machine operation. In 2015, Kuraray Noritake Dental Inc. released a new KATANA™ Zirconia series with a high level of translucency that resembles human enamel closely, thus expanding the application range of the product as an esthetically pleasing form of dental restoration. Multi-layered zirconia discs have been sold worldwide and have contributed greatly to the development of dental treatment around the world.
Kuraray Noritake Dental Inc. believes that its intellectual property rights are important management resources. Kuraray Noritake Dental Inc. makes it clear that if it finds that any of their intellectual property rights have been infringed, it is committed to handling the matter by appealing for strict application of the relevant laws.
For inquiries from the press: Contact Mr. Saito (TEL: 03-6701-1073), at IR&PR Dept., Kuraray Co., Ltd.
For inquiries about our products: Contact the Sales and Marketing Headquarters (TEL: 03-6701-1729), Kuraray Noritake Dental Inc.